Thermo-electric carbureter.



C. F. SCHULZ.

THERMO ELECTRIC CARBURETER. APPLICATION FILED FEB. 24, 1913. RENEWED JAN. 5.191;.

1,216,613. Patented Feb. 20, 1917.

GARL F. SCHULZ, OF BROOKLYN, NEW YORK.

THERMO-ELECTRIC CARBURETER.

Application. filed February 24, 1913, Serial No. 750,210. Renewed January 5, 1917.

To all whom it may concern:

Be it'lniown that I, CARL F. Borrow, a citizen of the United States, residing in the boroi'i'gh of Brooklyn, county of Kings, city and State of New York, have invented cer- ,tain new and useful Improvements in Thermo-Electric Cafliurctcrs, of which the following is a, specification.

This invention relates to carburetors and has for its object to provide means for electrically heating the fuel for agas engine, especially during the mixing and gasification of the elements, which elements in some instances will alsobe separably subjected to the .nliuence of the electric heater.

A carbureteii embodyin will be particularly useful in starting b supplement the carburetor heated by the exhaust gas from the engine. After the ,engine has commenced running smoothly, after starting the gas will heat the gas-heated earbureter, and the electrical energyof the batteries need no longer be drawn on for purposes oi heating.

My invention also contemplates the construction of a carburetor combining in one device means for heating by electricity and by exhaust gas which may be used con-. jointly o1; separately s desired.

, ()ne practicable embodiment of my invention is illustrated in the drawings accompanying this specification, wherein- Figure 1 is a central longitudinal sectional view;

Fig. 2 i a cross-scctional view taken on a plane at about the line 2-2, Fig. 1; and

Fig. 3 is a detail of one of the mixing chamber end The mi chamber in the present showing is made up of a number of cylindrical elements conncc together. These elements in the present showing comprise two members l and 2 which have screwthreaded connection with each other, and a member 3 l which has screvwthrca(led connection with r member 2. Member 3 is provided throughthem together.

out most of its length with a porcelain or other insulation sleeve 1. Vithin the sleeve 1 and the members 2 and l are located the thermoelectric devices which will heat the g a prior to mixing and after and during the n'iixing.

An end plate is provided for supporting the i arious parts of thedcvice and holding This plate in the present showing is a flange at the end of the meni- Specificatio'n of Letters Patent.

of electrical supply,

this improvement Patented Feb. 20, 1917.

Serial No. 140,844.

her 1. To this flange is secured a plate6 which. will be in connection with the source as for instance, by means of the conductor 7. The plate is provided with a hub which supports an electric. conductor-bar 8.

the present showing through members 1 and This bar extends in 2 and into the front end of member 3. Sleeves 9 and 10 are mounted upon thebar 8 and are of substantially the as are the members 1 and 2. Within the mixing chamber are disposed a plurality of conical spiral wires 11, 12. Each of these wires is made of some suitable resisting metal so that upon the passage of the elec trical current the wire will become hot. The larger end of the conical spiral is di' rected toward the inlet and the smaller end toward the direction of flow. The spiral will be of such dimensions that its maximum diameter will be substantially the maximum diameter of the annular space between the walls of the mixing chamber and the sleeve about bar 8, and its minimum diameter will be the minimum diameter of such annular space. In the present showing one convolution (the last convolution at the smaller end). will embrace the rod 8 where .this isexposed at the end of the sleeve, and

the larger end will lie between the abutting ends of the mixing chamber casing sections The sections shownare provided at one end with a flange 13 for screw-threaded connection with the coupling 14 of the other member, and a flange 15 of such proportion that a space will be left for receiving a convolution ofthe wire upon the outer side. The Wire will pass through a suitable hole 16 (see Fig. 3) from the inside to' the outside and then be given the convolution 17 which will act as a packing between the sections.

The section 3 is shown asof considerably same length i greater length than is the length of the combined sections 1 and 2. Within this section is the porcelain lining 4 above referred to, which lining communicates at the rear with the air inlet 18. Within the'sleeve is l0- cated the oil nozzle 19 which is connected by a suitable connection 20 with some oilsupplying device. The nozzle extends through the greater part of the chamber 3. The porcelain lining 4 tapers from the rear end to a point adjacent the discharge end of the nozzle 19 so that the air space is gradually carried down toward such nozzle and then the lining flares toward the other Which clamp hloer or porcelain insulators between such lining and the nozzle 19. Such coil in the present instance is connected hetween a flange at the end of the casing memher 3 and the end of toe lining l whereone of its convolutions is enlarged and the front end is Wraiipecl around the nut 22- on the end of the bar 8. The heating; coil 21 a Conical. spiral, it conforming to the taper of the lining y The plate (3 is held in position on the pla or flange 5 by means oil suitable bolts against such plate by means of the (llsCllZIl V nozzle coupling 26. Suitable openings ill are provided in the plate ('1 for the passageof the gas. A eonneoting pipe Bl is irown for leading the gas from the nozzle 2o.

lhe frame of the device will he the ground connection and the current will he led in, as before stated, at the connector 4" so that the current will pass from the bar 8 to the Various heating coils ll, 12 and and from these to the casing members and the frame of the machine.

In some installations it may he desirable to use this device as auxiliary to the carbureter which is heated from the exhaust gases, as for instance in starting; may. however, in some ins'ances be desirable to use this carburetor,continuously or it may again he found that at times with one mix-- ing; chamber the electrical device may be employed for starting and after the exhaust gases have arrived at sullicient heat and regularity of discharge to effect the heat-- ing, to use the gases for he purpose of heating thev same mixing chamber. For this purpose a. jacket shown;comprising; a casing 28 having an inlet 29 uul an outlot 30 for the exhaust gases from the oil-- gine, so that there is a chamber space provided around the mixing chamber for the purpose. above referred to. The using 28 is held in place by engaging at the front end the flange or plate 5 and at the each end being engaged by a coupling 32 which has screw-threaded connection with the easing 28 and with the mixing chamber meanher 3, which also carries the air and oil inlets.

When it is desired to electrically heat the carburetor oil will he admitted by means of the nozzle, and during its passage through the heat ngcoil 21 it Will be heated prior to its introduction to the air. The air will also be heated by passingthrough and around the coil 21 prior to such introcluo-- tion. Afterthe air and oil meet the put liininary mixing will he in the fleringportion of the porcelain shell 45 and thence that mixture will pass through a plurelity of heating coils L i i the ent slim l mixed and the engine cy 1 tion. may he (lii rily heat the device pr TI engine by hermitting th pass tlnioug'h the chan iiu'taneis. a able to heating; means a '3 electrical h CUlllil L l on or eti ooi devi be; sent a 1 an? nuist ion oh but one praeti eal; l

ying out of: the in n it will be. apparent e alien may he in: without ention. vention combination w it ZiZlG disposed t (trio mil s'urtoui'ian sir inlet n, and a. theme-e1 the said. i ll ise ha end,

.1 Willi e.

.Uion v eylii'idri. chamber s 11D ends an. inlet and an outlet id a. series oi? conical. snirel res located there n witl'i ""l nosed tower the (liree The com'o tion we cylindrical mixing oiainoe crosssection having at its 5 s, inlet and outlet respectively, and 2: series oi conical spiral resistance Wires located with their smaller ends disposed tow: direction. of L gas flow, each c1 said u having a mat-minim and a'ii-i ninnnn ter corresponding to the maximum a minimum. (ii; meter of the mining eha nose.

6. ln a earhureter the combination with mus els an oil nozzle ceninlet, a heating coil. space between the we cl the Wall of the act with each of these q 2: and oil preliminarily en, a substantially cylin- 'g chamber having at its ends an outlet 'eeeectively, and a cmiiczil spiral resistance Wires l0- Each). with the r smaller encls disgas flow.

.1 air inlet, (l in se.

42' t lmrcter the coml l lllnnlnflii. mixing chamber a plurelity or wthie seer sleeves hereen' cerresponclto the chamber sections, a

meal con CARL F. SCHULZ. VYitnesees GUSTAVE R. THOMPSON, FRED WHITE. 

